Revolving door



Jan. 9, 1951 H. G. E. NORDIN REVOLVING DDOR 3 Sheets-Sheet 1 Filed Jan.15, 1945 I I I I I I I I I I I I I I H. G. E. NORDIN REVOLVING DOOR Jan.9, 1951 3 Sheets-Sheet 2 Filed Jan. 15, 1945 Ina/e 72554";

Jan. 9, 1951 NORDlN 2,537,418

REVOLVING DOOR Filed Jan. 15, 1945 3 Sheets-Sheet 5 MAM & azzm PatentedJan. 9, 1951 UNITED STATES PATENT OFFICE REVOLVING DOOR Holger o. E.Nordin, Chicago, 111.

Application January 15, 1945, Serial No. 572,799%

2 Claims.

1 This invention relates to improvements in revolving doors and amongits objects is one to provide a door that is so designed, constructedand assembled as to be panic proof at all times thereby making it safein use in public places and elsewhere where such doors are, generallyused. "A further object is to provide doors of this general type whereinjamming of the doors and blocking of a passageway is at all timesavoided thus, in addition to the safety features provision is made toinsure the continuous eiiicient operation' of the structure with theminimum risk of damage and resultant inconvenience.

A still further object is to provide revolving doors wherein with greatpressure applied in a common direction against opposite doors the samewill each yield partially but sufficiently to provide a passagewaybetween each door and the wall of the door-opening. A still furtherobject is to provide door releas means at the top andbottom of each doorwhich means are connected in such manner that the applied pressure issubstantially, equally distributed over the door to prevent unduestress'and strain at one point or over any partial door area. A stillfurther object is to provide a revolving door whereinthe several panelsor wings may be collapsed int-o in-' operative or nested positionreadily for cleaning,

repair of the structure or for other purpose, and as readilyreassembled.

A still further object is to provide a revolving door of few parts,simple in construction, durable bodying the instant invention, the wingsor panels being shown in nested or inoperative position.

Fig. 2 is a view of the door, minus the wings or panels, in operativeposition.

Fig. 3 is an enlarged view of one panel showing the looking or controlmeans, the escutcheon plates being partly broken away.

Fig. 4 is a detail vertical cross sectional view through Fig. 3 on theline 44. Fig. 5 is an enlarged fragmentary view of the door, partly insection, showing one of the wings or panels in. locked position.

Fig. 6 is a plan view of the panel locking mechanism and,

- 2 Fig. 7 is a view of the same in longitudinal section.

Like reference characters denote corresponding parts throughout theseveral views.

The reference numeral l denotes a central vertical, preferably tubularshaft or support which is mounted for rotation in any manner well knownto this class of doors, preferably upon roller bearings. The doorpanels, ordinarily four in number, are denotedgenerally by the referencenumeral 2 and are of counterpart formation, said panels being normallydisposed radially from said shaft and'movable therewith in the usualmanner but capable of independent movement by the improved mechanismforming an essential feature of the. instant invention. Included in saidmechanism are a pair of spider plates 3, 4 received upon said shaft Iadjacent its ends and including central circular or disc like portions,said plate 3 having arms 1, four in number, extending radially therefromand having downturned perforated ends 8, said arms being spacedequidistant from each other about said plate; said lower plate 4 havingsimilar arms 9 extending therefrom inlike manner and having upturnedperforated ends Ill, said upper and lower arms being disposedrespectively in common vertical planes.

Each spider plate is formed with an annular recess ll, said recessesbeing upon relatively remote or outward plate faces, said recessesreceiving the travelling guide pins l2 carried by span arms I3 securedto said panels, the inner ends of said span arms being widened andterminating in toothed segments l4 in mesh with the large gears l5, onefast upon each end of said shaft l, perforations I la being also formedin recess H to facilitate pin removal when desired or necessary. r

The several span arms at opposite ends of said panels are located atdifferent distances from their respective spider plates or in steppedrelation so that in nested position, clearly shown in Fig. 1, they donot interfere with each other.

Arranged upon said shaft l in equal spaced relation to said spiderplates 3, 4 are the discs I6, I! each connected to a spider plate byfour pins [8, the pins of each disc being spaced regularly from eachother about the outer edge of the disc face and normal thereto.

Secured to the lateral faces of the panels at the cut-out portions [9are the escutcheon plates 29, 2| between which is located the lockingmechanism, said cut-outs being formed at the top and tourism inn? rateroi as!!! said sails! locking means provided between each pair of plates.Secured to one escutcheon plate at the top of each panel are a pair ofsleeve bearings 22, 23, the bearing 22 being threaded to receive the nut24 through which and through both bearings the bolt 25 extends that inone position extends through the perforation in the downturned end 8 ofan arm I, an expansion coil spring 2% upon said bolt. abutting.said,.nut 24 and the head 25 yieldingly,i pjai niiag said; bolt extendedposition. Said bolt 25 at its inner end is recessed for engagement byone end of the bell crank lever 21 fulcrumed to said escutoheon, theopposite end of said bell crank engaging the reduced-upper.

end of a connecting rod 28 movably carried by said panel.

Referring again to said bolt 25 one endgthere j of is deeply recessed toreceive a small expansion coil spring 29 abutting one end of sai' recessand the inner end of the pin 3B, said pin having an elongatedperforation 3F receiving. a stop pin 32 carried by a bearing 33 arrangedupon one escutclieon plate and having" ears 34 supporting a shaft 35oithe detent 3E abutting'one end of connecting rod 28 so thatin oneposition of said detent clearly shown in Fig. 3' said connecting rodis-retained-indepressed position; said detent being yieldinglyrestrained by said spring 29.-

Arranged upon saidishaft 35 upon the opposite sideof said panel-is thehandle 37 which may bemoved manually to retract said. spring and soposition saiddetent relative .to said con"- necting r'odas to permit araised. position there.- of. The structurehere setup provides a cushionfor said bolt and its connections tofaoilit'ate effective-operationthereof.

The lower end of connecting rod 28 is engaged at its recessed portion bya bell crank lever-.38 supported in a bracket 39 carried by said doorpanel; the opposite end' of said lever beinglconnected by coupling .40to a link 41 operativel'y engaging a bolt42 that extends through nut214a adjustably carried by the bearing 22a spaced from a-bearing23maspring. 26a,- receivedupon saidbolt engaging said nut andthe head ofbolt 42} said belt inextendedip'osition engagingv the upturnedperforated end of .saidiarin 91... Carried by the panel at its top ana-beam inneredge portions are the'plates 43; 44' recessed for nest.- ingengagement with saidpins I'B thus .in effect formin'g a hinge forthe'panel; In ordinary. use of the door a light pressure against .anypanel will rotatethe door, thespringsZGJfia .of .each panel yieldinglyretaining the bolts 25, 42' operat ive engagement with the span arms .1,S; the nuts 24', 24a being' used to vary the'tension'of saidsprings.Pressure uponsaid. panels is evenly distributed by the lockingmechanisms arranged along top and bottomsections thereof saidmechani'snisbeing connected bysaidi connecting rods 28, said span armsbeing permanently secured by pins i2 to' the-recessed porti'ons IIofrsaid spider plates. The operative position ofthe rods 28 in the'irraised position which through their connection to bolts 25; 42 retainssame in extended span arm engaging position. V g

In the event that a sudden excessive pressure or major impact isreceived 'iipona'panel, or

panels, the pressure er'spjnrigs 2's, tears overcome and their boltsretracted and disengaged from said span arms permitting said panels withshamans: m an m are one is i operative position; the"segnemaipcrti'ori's I 4 er arms l3 moving about the gears l5 and theplates 43, 44 moving about their respective pins I8, a passageway thenbeing set up between the outer edges of said panels and the door casingor jamb so that passage is unhindered. The panels are, however, securedby pins 12 to the spider plates and, when desired, the panels may bereadily restored manually to normal position. The dete ts i6 m rlb n eed 1 m ans 9 their handles 31;, When it is desired tdliqsiltion the doorpanes for non-use as" in the "sdminer time the bolts 25, 42 may bemanually retracted by means of the handle 31 depressing saidconnectinglr'ods 28, and since the segmental arms are disposed insteppedrelation upon the gears IS the panels may be readily disposed in nestedposition, ,Ifhepins j f t-now solely secure said panels to the centralstructure. The central shaft I is formed with a bayonetslot 48 in whichis disposed the handle t! of pin 46 that extends downwardly beyond thelevel of the floor-r49; removal of the door this pin may .beIaised-byits handle to clear the floor; In operationiihs 10.0. structureis supported in bearing 51 and; held in vertical operativepositionbysaid pin iiigthen supported bearing. 52, the door operating in theusual. tract 50 which is a space provided in structures built toaccommodate revolving doors and forms no part of the instant structure.

What is claimed is: 1-.. Inv a revolving door,- acentral, shaft spjdcrplates fast upon saidshaft adjacent the; ends thereof recessedlannularlyupon their relatively remote faces, discs upon said sha ft in' 'edualspaced relationto said spider plates, pins con; necting said discsandspider plates, perforate arms carried by said spider plates e nidione r m th the sc rs a ti onit s ends f said centralshaft, door lianelsnormally 4d :1- posed radially. of; said recessd plt is carriedby saidpanels norma ll y engaging Is d .pins span, arms secured to said' panelsf toothed segmentalportions engaging said e f pins carried bysaid spanenga ing spider plate recesses; termm lly mrec d nectingrodsadjiistablycai by e'scutcheon plates carried ,bysa d' p p pressedbolts carried by, said esci igtcheonl p yi ifisly. n. lock ng i e' W tperforate arms, bell crarilsl escutcheon plates engagingf the r. of.said connectingrod's, said" b ell crass levers connected to saidspring-pifess edbolts, deteiits carried by certain of saidfesci'itcliebn h res enjgagi'ng said connecting rods and ioeknig same inpredetermined positions thereof, spring-actuated means connecting saiddetents' andsaid spring-pressed bolts 'yie ldin'gly. retaining saiddetents in locking engagement with saidconnecting rods, andrelease meansfor said detent's.

2. In arev'olv-ing door, a central shaft, spider plates-fast upon saidshaft adjacenttheends thereof recessed annularly upon their relativelyief'n'ote faces, discs upon said shaft in eqiial spaced relation to saidspider plates, pins-con;- necting said discs and spider plates,,perfn'rate arms carried by said spider.plateseqnidistant one from theother, gea'r's fast up'on the end'shf said central shaft, door panelsnormally dispfised radially of said shaft,reces'sed plates carried bysaid panels normally engaging said pins. span arms secured to saidpanels having tnothed segmental portions engaging saidgears; pinscarried 'by said span arms engaging said spidervjplate recesses,terminally recessed connecting rods ad 6 justably carried by saidpanels, escutcheon plates REFERENCES CITED carried by said panels,spring-pressed bolts carried by said escutcheon plates yielding'ly inlooking. engagement with said perforate arms,

The following references are of record in the file of this patent:

bell crank levers carried by said escutcheon 5 UNITED STATES PATENTSplates engaging the recessed portions of said 0011- N b Na D t nectingrods, said bell crank levers connected to 1,135 313 Havfland May 30 191said spring-pressed bolts, and manually releas- 2 010, 25 peremi t 1 131935 able locking means for said connecting rods operative in apredetermined position of said rods, 10 FOREIGN PATENTS said lockingmeans connecting said rods and said Number Country Date I spring-pressedbolts. 299,945 Great Britain Nov. 8, 1928 360,858 Great Britain Nov. 11,1931 HOLGER G. E. NORDIN. 670,218 France NOV. 26, 1929

